/* (non-Javadoc)
* Method declared on Viewer.
*/
protected void preservingSelection(Runnable updateCode) {
if (!getPreserveSelection()) {
return;
}
// If a check provider is present, it determines the state across input
// changes.
if (checkStateProvider != null) {
// Try to preserve the selection, let the ICheckProvider manage
// the check states
super.preservingSelection(updateCode);
return;
}
// Preserve checked items
int n = getItemCount(getControl());
CustomHashtable checkedNodes = newHashtable(n * 2 + 1);
CustomHashtable grayedNodes = newHashtable(n * 2 + 1);
gatherState(checkedNodes, grayedNodes, getControl());
super.preservingSelection(updateCode);
applyState(checkedNodes, grayedNodes, getControl());
}
